Sliding-door lock.



PATENTED APR. 2, 1907.

L. CATOR.

SLIDING DOOR LOOK.

APPLICATION FILED APR. 21, 1906.

q vi/Mwowo PATENT OFFICE.

LEON OATOR, OF PALMYRA, NEW YORK. I

SLIDING-DOOR LOCK.

Specification of Letters Patent.

Patented April 2, 1907.

Application filed April 21, 1906' Serial No. 313,037.

To all whom it may concern.-

Be it known that I, LEON OAToR, a citizen of the United States, residing at Palmyra, in the county of Wayne and State of New York, have invented certain new and useful Improvements in Sliding-Door Locks, of which the following is a specification.

This invention relatesto new and useful improvements in looking devices for sliding doors.

, The invention particularly contemplates a novel hasp carried by the door for engagement with a keeper and means for locking said hasp in its engaged or latched position.

The primary object of the present invention resides in the novel arrangement of the several constituent elements whereby it is impossible to obtain access to the locking devices except by the proper manipulation.

Another object resides in the provision of a lock which shall force the door into close contact with the door-frame at the termination of the movement of the door in its closed position in order to prevent as far as possible the ingress of dust or the elements into the building and in order that no space may be left between the door and the door-frame for the insertion of a burglars tool.

Still another object resides in the provision of a lock for sliding doors, such as car or barn doors and the like, which shall compensate for the racking of the superstructure.

The detailed construction will appear in the course of the following description, reference being had to the accompanying drawings, forming a part of this specification, like numerals designating like parts throughout the several views, wherein Figure 1 is a plan view of a door provided with my improved locking device. Fig. 2 is a plan view of the door-jamb. Fig. 3 is a central horizontal section of the view shown in Fig. 1. Fig. 4 is a horizontal section, on an enlarged scale, showing in detail the relation of the locking elements; and Fig. 5 is a similar view of a modified embodiment of the invention.

In the practical embodiment of my invention the door A is of the sliding type and is braced at its upper and lower ends by transverse plates 1. Track-pulleys 2 are carried upon the upper end of the door A and move along a track 3, secured to the upper cross bar of the door-frame. A hasp-plate 4 is secured transversely upon the door by bolts or rivets 5. At its free end the said hasp-plate space is aiforded for the entrance of a locking element rearwardly of said shoulder.

Mounted upon the door-posts B are devices complementary to the hasp-plate 4 in its latching function.

A keeper 9 is provided for the reception of the wedge-shaped extension 7 and to this end is provided with an angular face 10, longitudinally slotted for the reception of said shoul der. The plate 9 is mounted upon the. posts B, so as to have its body portion flush there with to permit the passage of the extension 7 through the extension 10 in its latching function. A sliding bolt 11 is mounted in the post B rearwardly of the shoulder 6 of the hasp-plate 4. The bolt 11 is designed to be tripped by a key 12 from either side of the door, and is designed to enter the recess 8, so as to be in the path of the shoulder 6 and prevent the opening of the door. As shown in Fig. 5, the keeper 9 is constituted of a T- shaped plate, having its angular leg 13 longitudinally slotted for the reception of the extension 7 and having its base overlying the opening in the post B for the bolt 11 and slotted for the passage of said bolt therethrough. For the purpose of reinforcing the structure of the lock the bolt-plate 14 is secured to the base of the T-plate. (Shown in Fig. 5.)

In practical use the door is forced to the limit of its movement, the pulleys 2 riding upon the track 3. As usually constructed, a stop is placed at the bottom of the door-post, against which the door impinges at the termination of its rapid sliding movement, and in this type of construction the unspent momentum when the door engages the stop at the bottom of the door-post causes the door to, rock or tilt, so as to throw one or more of the track-pulleys from the track and disrupt the structure.

In the present invention the keeper 9 serves as a stop and is arranged in a line with the central horizontal axis of the door, so that the unspent momentum will exert its force along the dead-center of the door with relation to the keeper, so that all tendency on the part of the door to rock or tilt at the term'ii nation of its inward movement is eliminated.

It is the usual practice to provide a slight space between the building and the sliding 1 door in its suspended relation in order that the latter may move smoothly, easily, and without friction. In the present invention this space is compensated by the extension. 7, which owing to its inclined or tapered surface is forced inwardly as it rides within the keeper, and thereby serves as a check for the movement of the door and also to force the door into close contact with the door-post for the purpose above set forth.

The slot in the keeper 9 for the reception of the extension 7 may be somewhat greater in its perpendicular dimensions than said extension to compensate for the racking of the superstructure and to thus permit of the entry of the extension into the keeper in its locking function under all conditions.

When the door has reached the limit of its movement in the closed position, the bolt 11 is tripped and enters the recess 8, in which it engages the shoulder 6 of the hasp-plate 4 and prevents the opening of the door except by the proper manipulation.

Access to the locking element by unauthorized parties is prevented, owing to the cornplete inclosure of said element by the haspplate and upper and lower walls of the recess 8.

Having fully described my invention, I claim 1. The combination with a sliding door of a hasp-plate fixed thereto, said hasp-plate having a shouldered end portion terminating in a forward. extension in a plane parallel to the plane of said plate, said door being recessed adjacent to said shouldered end, a stationary keeper for said extension and a bolt designed to work in the recess of said door, and to engage said shouldered end whereby to hold said extension within said keeper.

2. The combination with a sliding door of a hasp-plate carried thereby, said hasp-plate having a shouldered. end provided with a forward angular extension in a plane parallel to the plane of said plate, said. extension having an inclined or beveled surface, said door being recessed rearwardly of said extension, a stationary keeper for said extension, and a sliding bolt designed to work in the recess ol said door and to engage said shouldered end. 5 whereby to hold said extension within said. keeper.

3. The combination with a sliding door, of a hasp-plate carried thereby, and provided with an angular shoulder in spaced parallel 6 relation to the adjacent edge of the door, said shoulder having a forward extension parallel with the said hasp-plate, a stationary keeper for said extension and a sliding bolt mounted for reciprocating movement longitudinally of 6 said shoulder and adapted and arranged for locking engagement with said shoulder, as and for the purpose specified.

In testimony whereof I aflix my signature in presence of two witnesses.

LEON CATO R.

itness es E. X. CHAPMAN, L. G. Caron. 

